What to do if the Mijia Front Load Washer Dryer 10.5kg cannot upgrade firmware?

If the Mijia Front Load Washer Dryer 10.5kg cannot upgrade firmware, please refer to the following steps to troubleshoot:
1. Please check whether the network is normal and ensure the washing machine is properly connected to the Mi Home/Xiaomi Home APP;
2. Check whether the router can work properly to ensure that the network is unobstructed;
3. Restart the washing machine and try again.
If the problem remains unresolved, contact the after-sales service center for assistance.